42311323 has 4 divisors (see below), whose sum is σ = 42325920. Its totient is φ = 42296728.

The previous prime is 42311299. The next prime is 42311333. The reversal of 42311323 is 32311324.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 42311323 - 2²¹ = 40214171 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 42311323.

It is not an unprimeable number, because it can be changed into a prime (42311333) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1315 + ... + 9292.

It is an arithmetic number, because the mean of its divisors is an integer number (10581480).

Almost surely, 2^42311323 is an apocalyptic number.

42311323 is a deficient number, since it is larger than the sum of its proper divisors (14597).

42311323 is a wasteful number, since it uses less digits than its factorization.

42311323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14596.

The product of its digits is 432, while the sum is 19.

The square root of 42311323 is about 6504.7154434303. The cubic root of 42311323 is about 348.4594138242.

Adding to 42311323 its reverse (32311324), we get a palindrome (74622647).

Subtracting from 42311323 its reverse (32311324), we obtain a palindrome (9999999).

The spelling of 42311323 in words is "forty-two million, three hundred eleven thousand, three hundred twenty-three".